So far as the religion of the day is concerned, it is a damned fake ... Religion is all bunk.

There will one day spring from the brain of science a machine or force so fearful in its potentialities, so absolutely terrifying, that even man, the fighter, who will dare torture and death in order to inflict torture and death, will be appalled, and so abandon war forever.

Genius is one percent inspiration, ninety-nine percent perspiration.

I know of over 3,000 ways [that] a light bulb does not work.

I do not believe any type of religion should ever be introduced into the public schools of the United States.

Any large extension of the Government into business affairs - no matter what the pretense and no matter how the the extension is labeled - will be bound to promote waste and put a curb on our prosperity and progress.

I did not fail two thousand times. I merely found two thousand ways not to make a lightbulb.